#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define rep(i, a, b) for (int i = (a); i <= (b); i++)
#define per(i, a, b) for (int i = (a); i >= (b); i--)
#define endl '\n'
const int N = 2e5 + 5;

int n, m;
int a[N], sum[N];

int main() {
  ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  cin >> n;
  rep(i, 1, n) cin >> a[i];
  rep(i, 1, n) sum[i] = sum[i - 1] + a[i];
  cin >> m;
  rep(i, 1, m) {
    int l, r;
    cin >> l >> r;
    if (l > r) swap(l, r);
    cout << sum[r] - sum[l - 1] << endl;
  }
  return 0;
}